Solved (SOLVED) u2ec: Error unlocking 18: 9 Bad file descriptor

[Ro berto]

Hello fellow members:

I am trying to print a pdf, my hp printer which does not have wireless capability is connected through usb to the router (RT-AC86U).
Usually when having trouble printing I would just execute

service restart_u2ec

and the printer would work again and print the document.

But now it doesn't want :/

When taking a look at system log I see the following:

Jul 24 12:00:13 dropbear[5280]: Child connection from 192.168.1.10:41956
Jul 24 12:00:13 dropbear[5280]: Password auth succeeded for 'robertozombie' from 192.168.1.10:41956
Jul 24 12:00:13 rc_service: service 5283:notify_rc restart_u2ec
Jul 24 12:00:13 custom_script: Running /jffs/scripts/service-event (args: restart u2ec)
Jul 24 12:00:14 dropbear[5280]: Exit (robertozombie) from <192.168.1.10:41956>: Exited normally
Jul 24 12:00:21 u2ec: Error unlocking 14: 9 Bad file descriptor

The last line shows an error, I don't know if this is the culprit, what do you think?

Thanks

 

[Ro berto]

Just to add,

I already rebooted the printer and the router, and still cannot get it to print.

 

[ColinTaylor]

Are you still getting the Bad file descriptor message in your log?

Maybe you have run out of them. SSH into the router and post the output of these commands:

cat /proc/sys/fs/file-nr

ulimit -a

 

[Ro berto]

Hi Colin,

Yeah, still getting the bad file descriptor message in the log, here are the outputs of the commands you wrote:

roberto@ASUS:/tmp/home/root# cat /proc/sys/fs/file-nr
1344    0       43984
roberto@ASUS:/tmp/home/root# ulimit -a
-f: file size (blocks)             unlimited
-t: cpu time (seconds)             unlimited
-d: data seg size (kb)             unlimited
-s: stack size (kb)                2048
-c: core file size (blocks)        0
-m: resident set size (kb)         unlimited
-l: locked memory (kb)             64
-p: processes                      1719
-n: file descriptors               1024
-v: address space (kb)             unlimited
-w: locks                          unlimited
-e: scheduling priority            0
-r: real-time priority             0
roberto@ASUS:/tmp/home/root#

Thanks

 

[Ro berto]

Whenever I restart the printer service, the printer prints a document that I sent on the 1st of July, and it stays on the "printing status" (see attached pic), cancel or restart seems to do nothing...

Roberto

 

[Ro berto]

It works now, I think it was a Windows error and not an Asus Merlin error (sorry Eric for doubting you )

After deleting everything inside:
C:\Windows\System32\spool\PRINTERS
The problem was solved.

Leaving the guide I found in case someone has the same error:

https://help.logmein.com/articles/en_US/FAQ/How-do-I-clear-the-print-queue-if-a-document-is-stuck-en1

Thanks Colin for your help.

EDIT: the real problem was solved by using HP's drivers instead of Windows'

 

[Ro berto]

Out of curiosity, what do you mean with this? (in bolds)

Are you still getting the Bad file descriptor message in your log?

Maybe you have run out of them. SSH into the router and post the output of these commands:

cat /proc/sys/fs/file-nr

ulimit -a

 

[ColinTaylor]

Out of curiosity, what do you mean with this? (in bolds)

There are limits on the amount of system resources that can be used. So for example, if you had some rogue process that was in a loop opening more and more files you would eventually reach the limit on the number of files that can be open at a given time.

 

[Ro berto]

The root cause problem were the faulty windows drivers vs. HP's drivers

see this post